Flagaway&reg; Luth-AR MBA-2 "SKULLATON" Black Modular Fixed Buttstock Stock A1 A2 Rifle Length 5.56 .223 .308 Luth-AR MBA-2 Modular Buttstock Assembly for Fixed Stock A1/A2 5.56/308 hunting rifles. Strong polymer construction & only weighs 10oz Built in QD socket WE HAVE THE BEST PRICE!!! BRAND NEW (: